The Costco Auto Program is one of the least-known and most financially significant benefits of the Costco membership — a program that more than 700,000 members used in the past year to purchase a new vehicle at pre-negotiated member pricing, bypassing the adversarial negotiation dynamic that makes conventional car dealership purchasing one of the most stressful financial transactions most consumers ever face. The program's commercial premise is straightforward: Costco's insti